CN107311631A - A kind of raw powder's production technology for being used to prepare high tenacity refractory material - Google Patents
A kind of raw powder's production technology for being used to prepare high tenacity refractory material Download PDFInfo
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- CN107311631A CN107311631A CN201710526790.0A CN201710526790A CN107311631A CN 107311631 A CN107311631 A CN 107311631A CN 201710526790 A CN201710526790 A CN 201710526790A CN 107311631 A CN107311631 A CN 107311631A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62695—Granulation or pelletising
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to technical field of refractory materials.It is used to prepare the raw powder's production technology of high tenacity refractory material the invention discloses a kind of, it includes getting the raw materials ready, raw material crushing, preliminary granulation, granulate again and powder for preparing high tenacity refractory material is made in the step such as toughening modifying.Reasonable raw material proportioning in preparation method of the present invention, can be realized with higher fire resistance, while also suitably can reduce cost；The toughener of use has good toughening effect, the characteristics of can assigning refractory material powder high tenacity；Powder is handled using the method for secondary granulation in the present invention, it can cause the distribution of toughener that the Relatively centralized of small range is presented, spreading for crack in refractory material made from powder can preferably be blocked, the refractory material being prepared so as to assign the powder for preparing refractory material has higher fracture toughness, the performance impacted with more preferable resistance to mechanical.
Description
Technical field
The present invention relates to technical field of refractory materials, more particularly, to a kind of powder for being used to prepare high tenacity refractory material
Preparation method.
Background technology
In traditional sense, refractory material refers to that refractoriness is not less than 1580 DEG C of inorganic non-metallic material, and it is for height
The basic material of temperature technique service, is used as the structural material of the Thermal Equipments such as high temperature kiln, and industrial high temperature container and portion
The material of part, and corresponding physicochemical change and mechanism can be born.
Most of refractory material is with natural crystal（Such as fire clay, silica, magnesite, dolomite）Manufactured for raw material
, using some raw materials of industry and artificial-synthetic material（Such as commercial alumina, carborundum, mullite synthesizing, synthetic spinel
Deng）Also increasing, therefore, the species of refractory material is a lot.Refractory material can be divided into the siliceous, silicon of oxidation according to mineral composition
Sour aluminum, magnesia, dolomite matter, olivine matter, spinel, containing carbonaceous, containing zirconia refractory and special refractory；Press
It can be divided into natural crystal and artifact according to manufacture method；It can be divided into block elements and unshape refractory by its mode；
It can be divided into not burned product, burnt product and melt-cast products according to heat treatment mode；It can be divided into common, senior and spy according to refractoriness
Level refractory product；It can be divided into acid, neutral and basic refractory according to chemical property；It can be divided into lightweight and again according to its density
Fire resistant materials；Shape and size according to its product can be divided into standard brick, special shaped brick, special special shaped brick, pipe and flame ware；Also
Blast furnace use, cement kiln use, glass furnace use, ceramic kiln refractory etc. can be divided into by its application.
It is a problem of generally existing in inorganic non-metallic and material that the mechanical tenacity of inorganic non-metallic material is poor, is made
To belong to the refractory material of inorganic non-metallic material together, its mechanical tenacity is also poor, although refractory material is almost in use
It need not move, but thermal shock resistance of its poor mechanical tenacity when also having had influence on its high temperature, it is anxious in chilling
Heat and the gap used are resistance to because the influences such as cracking, peeling easily occur under the effect of expanding with heat and contract with cold for larger temperature difference refractory material
The situation of fiery material integrity, reduces the service life of refractory material；Simultaneously for those need often to move it is resistance to
Fiery material product, its poor mechanical tenacity can then greatly increase the spoilage of refractory product, influence its routine use.
The content of the invention
To solve the above problems, can simultaneously be had to refractory material powder progress toughening modifying the invention provides a kind of
The refractory material powder preparation method of the refractory material powder of high tenacity performance.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of raw powder's production technology for being used to prepare high tenacity refractory material, comprises the following steps：
a）Get the raw materials ready：Prepare raw material by following parts by weight：120 parts of aluminum oxide, 35~45 parts of magnesia, 2~5 parts of toughener is bonded
1~3 part of agent；
b）Raw material is crushed：Aluminum oxide and magnesia are crushed to 3000~4000 mesh respectively；
c）Preliminary granulation：Aluminum oxide and magnesia are well mixed, then spray into thereto aluminum oxide and magnesia gross weight 2~
5wt% water, continuous vibrating prilling while water spray；
d）Granulate again：Binding agent is added in the powder after preliminary granulation, and dry-mixed 20~30 minutes of ball milling；
e）Toughening modifying：Toughener is added in the powder after step d processing, and dry-mixed 10~20 minutes of ball milling, after drying
The powder for preparing high tenacity refractory material is made.
In refractory material system, magnesium aluminate spinel series refractory material is a kind of important refractory material.When magnesia and
When the molar percentage of aluminum oxide is 50% or so in alumina raw material powder, it can generate stablizing and have after high-temperature process
The magnesium aluminate spinel thing phase of fabulous resistance to elevated temperatures, simultaneous oxidation aluminium content is higher, and magnesium aluminate spinel is mutually more stable；Due to oxidation
The cost of aluminium, particularly high purity aluminium oxide is even more many twice of magnesia, therefore is guaranteeing to generate stable magnalium point
The addition of aluminum oxide is reduced on the premise of spar phase as far as possible；The molar percentage of aluminum oxide is 51.4~57.6% in the present invention
In the range of, magnesium aluminate spinel phase that is enough and being stabilized can be generated after being handled through subsequent high temperature, and can reduction production as far as possible
Cost.
Powder produced by the present invention for preparing high tenacity refractory material is used directly for sintering after being molded on demand,
Without carrying out other processing again.The method that secondary granulation is used in the present invention, granulation for the first time be for raw alumina and
The granulation of magnesia, using the granulation mode of water spray, in order to make aluminum oxide and magnesia well mixed and can form one
Determine the order of magnitude of the particle diameter of bulky grain that is formed after the bulky grain of particle diameter, granulation at 0.01 millimeter, so beneficial to follow-up technique,
Also being beneficial to toughener in subsequent step simultaneously can preferably be distributed in the gap of magnesia alumina powder；Second of granulation
Granulated using first granulating for the first time in obtained powder by the way of addition binding agent, be 0.01 millimeter of rank by original particle diameter
Grain granulation formation particle diameter be 0.1 millimeter of quantity powder particles, and it is next step increasing uniformly to superscribe binding agent in powder
Tough dose can stablize the surface for being attached to particle；In the present invention, first secondary granulation adds toughener rather than one thereto again
The purpose for starting just to add toughener is the integrated distribution for making toughener form small range in powder；Due to the addition of toughener
Amount is seldom, if toughener is equally distributed in powder, is produced in refractory material obtained by firing behind crack, toughener is less
Then it is difficult to the extension for preventing crack, by the method in the present invention, the concentration for making toughener relative in small range, when crack is spread
To being can there is enough ability to prevent spreading for crack, it is ensured that the fracture toughness of refractory material.
Preferably, toughener presses 6 by niobium pentaoxide and tantalum pentoxide：2~3 weight is than composition.
Niobium element and tantalum element are the elements of periodic table of elements Group VB, and the two elements are tight up and down in the periodic table of elements
Suffer, with similar property, its same oxide, niobium pentaoxide and tantalum pentoxide also have similar physics and chemically
Matter；The present invention is directed to, tantalum pentoxide and niobium pentaoxide have three important characteristics, and 1. have certain heat-resisting quantity
Can, will not be to fire proofed wood although it is as a kind of functional additive, i.e., to be added as toughener to be added in refractory material
The refractoriness of material produces large effect；2. both oxides have relatively stable property, in other words in the system of the present invention
In relatively stablize, reaction will not be produced with magnesia or aluminum oxide etc., will not also occur solid solution, presence that can be independent is simultaneously played
Toughening effect；3. the two oxides particle all has good mechanical mechanics property, namely with preferable tensile property, its
The effect of traditional particulate reinforcement can not only be realized after addition, moreover it is possible to this effect is performed to most preferably, can preferably suppress
The diffusion of material internal fissure.But both oxides there is also it is certain the problem of, although that is, tantalum pentoxide is with good resistance to
High-temperature behavior, its tensile property is poor, although and tantalum pentoxide resistance to elevated temperatures is slightly poor, but tensile property is also not
It is wrong, it is therefore desirable to which that by both by being added after certain unfavorable mixing, and the fitting method that niobium pentaoxide occupies the majority is to fire resisting
The toughening effect of material is more preferably.
Preferably, binding agent is 5wt% Kynoar 1-METHYLPYRROLIDONE solution.
Kynoar 1-METHYLPYRROLIDONE solution refers to that Kynoar is dissolved in what is obtained in 1-METHYLPYRROLIDONE
Solution.
Binding agent in the present invention is used to uniformly bond the toughener being made up of niobium pentaoxide and tantalum pentoxide
Onto the magnesia and alumina powder after granulation.In the prior art, binding agent typically uses polyvinyl alcohol（PVA）It is water-soluble
Liquid, but polyvinyl alcohol is a kind of organic high molecular compound of non-refractory, its fusing point is relatively low, and decomposition temperature is relatively low, makees
It is added to for binding agent in powder, needs to carry out dumping processing at a lower temperature in sintering stage, at a lower temperature
Dumping, easily causes holdup time process of the product after binding agent is decomposed in powder, or even produce the long period to powder
Lasting impact, causes the decline of obtained refractory material mechanical property；Kynoar is a kind of with high-temperature stability
Organic high molecular compound, compared to polyvinyl alcohol, it has a relatively higher fusing point, relatively higher decomposition temperature, therefore
The temperature of powder dumping can also be raised accordingly, after dump temperature rise, and catabolite also can be discharged quickly from powder,
The time for being detained powder is reduced, the influence to refractory material mechanical property is made is reduced.
Preferably, in step c, the process of water spray is uniform at 10~12 minutes to be completed.
In prilling of spraying water, the purpose of water spray be in order to allow powder surface wetting, then with certain adhesive property,
Therefore the speed of water spray is slow, uniform.
Therefore, the invention has the advantages that：
（1）Reasonable raw material proportioning in preparation method of the present invention, can be realized with higher fire resistance, while also can be appropriate
Reduce cost；
（2）The toughener used in the present invention has good toughening effect, can assign the spy of refractory material powder high tenacity
Point；
（3）Powder is handled using the method for secondary granulation in the present invention, can cause the distribution of toughener that small model is presented
The Relatively centralized enclosed, can preferably block spreading for crack in refractory material made from powder, so as to assign resistance to for preparing
The refractory material that the powder of fiery material is prepared has higher fracture toughness, the property impacted with more preferable resistance to mechanical
Energy.
Embodiment
Technical scheme is further described with reference to embodiment.
Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, all other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
Embodiment 1
A kind of raw powder's production technology for being used to prepare high tenacity refractory material, it is characterised in that comprise the following steps：
a）Get the raw materials ready：Prepare raw material by following parts by weight：120 parts of aluminum oxide, 35 parts of magnesia, 2 parts of toughener, 1 part of binding agent；Increase
Tough dose is pressed 6 by niobium pentaoxide and tantalum pentoxide：2 weight is than composition；Binding agent is 5wt% Kynoar N- methyl
Pyrrolidone solution；
b）Raw material is crushed：Aluminum oxide and magnesia are crushed to 3000 mesh respectively；
c）Preliminary granulation：Aluminum oxide and magnesia are well mixed, aluminum oxide and magnesia gross weight are then sprayed into thereto
2wt% water, continuous vibrating prilling while water spray；The process of water spray is uniform at 10 minutes to be completed；
d）Granulate again：Binding agent is added in the powder after preliminary granulation, and dry-mixed 20 minutes of ball milling；
e）Toughening modifying：Toughener is added in the powder after step d processing, and dry-mixed 10 minutes of ball milling, it is made after drying
Powder for preparing high tenacity refractory material.
Embodiment 2
A kind of raw powder's production technology for being used to prepare high tenacity refractory material, it is characterised in that comprise the following steps：
a）Get the raw materials ready：Prepare raw material by following parts by weight：120 parts of aluminum oxide, 42 parts of magnesia, 3 parts of toughener, 1.5 parts of binding agent；
Toughener presses 6 by niobium pentaoxide and tantalum pentoxide：2.5 weight is than composition；Binding agent is 5wt% Kynoar N-
Methylpyrrolidone solution；
b）Raw material is crushed：Aluminum oxide and magnesia are crushed to 3000 mesh respectively；
c）Preliminary granulation：Aluminum oxide and magnesia are well mixed, aluminum oxide and magnesia gross weight are then sprayed into thereto
3wt% water, continuous vibrating prilling while water spray；The process of water spray is uniform at 10 minutes to be completed；
d）Granulate again：Binding agent is added in the powder after preliminary granulation, and dry-mixed 25 minutes of ball milling；
e）Toughening modifying：Toughener is added in the powder after step d processing, and dry-mixed 15 minutes of ball milling, it is made after drying
Powder for preparing high tenacity refractory material.
Embodiment 3
A kind of raw powder's production technology for being used to prepare high tenacity refractory material, it is characterised in that comprise the following steps：
a）Get the raw materials ready：Prepare raw material by following parts by weight：120 parts of aluminum oxide, 40 parts of magnesia, 3.5 parts of toughener, 2 parts of binding agent；
Toughener presses 6 by niobium pentaoxide and tantalum pentoxide：2.5 weight is than composition；Binding agent is 5wt% Kynoar N-
Methylpyrrolidone solution；
b）Raw material is crushed：Aluminum oxide and magnesia are crushed to 3500 mesh respectively；
c）Preliminary granulation：Aluminum oxide and magnesia are well mixed, aluminum oxide and magnesia gross weight are then sprayed into thereto
3.5wt% water, continuous vibrating prilling while water spray；The process of water spray is uniform at 11 minutes to be completed；
d）Granulate again：Binding agent is added in the powder after preliminary granulation, and dry-mixed 25 minutes of ball milling；
e）Toughening modifying：Toughener is added in the powder after step d processing, and dry-mixed 15 minutes of ball milling, it is made after drying
Powder for preparing high tenacity refractory material.
Embodiment 4
A kind of raw powder's production technology for being used to prepare high tenacity refractory material, it is characterised in that comprise the following steps：
a）Get the raw materials ready：Prepare raw material by following parts by weight：120 parts of aluminum oxide, 37 parts of magnesia, 4 parts of toughener, 2 parts of binding agent；Increase
Tough dose is pressed 6 by niobium pentaoxide and tantalum pentoxide：2 weight is than composition；Binding agent is 5wt% Kynoar N- methyl
Pyrrolidone solution；
b）Raw material is crushed：Aluminum oxide and magnesia are crushed to 4000 mesh respectively；
c）Preliminary granulation：Aluminum oxide and magnesia are well mixed, aluminum oxide and magnesia gross weight are then sprayed into thereto
4wt% water, continuous vibrating prilling while water spray；The process of water spray is uniform at 12 minutes to be completed；
d）Granulate again：Binding agent is added in the powder after preliminary granulation, and dry-mixed 25 minutes of ball milling；
e）Toughening modifying：Toughener is added in the powder after step d processing, and dry-mixed 15 minutes of ball milling, it is made after drying
Powder for preparing high tenacity refractory material.
Embodiment 5
A kind of raw powder's production technology for being used to prepare high tenacity refractory material, it is characterised in that comprise the following steps：
a）Get the raw materials ready：Prepare raw material by following parts by weight：120 parts of aluminum oxide, 45 parts of magnesia, 5 parts of toughener, 3 parts of binding agent；Increase
Tough dose is pressed 6 by niobium pentaoxide and tantalum pentoxide：3 weight is than composition；Binding agent is 5wt% Kynoar N- methyl
Pyrrolidone solution；
b）Raw material is crushed：Aluminum oxide and magnesia are crushed to 4000 mesh respectively；
c）Preliminary granulation：Aluminum oxide and magnesia are well mixed, aluminum oxide and magnesia gross weight are then sprayed into thereto
5wt% water, continuous vibrating prilling while water spray；The process of water spray is uniform at 12 minutes to be completed；
d）Granulate again：Binding agent is added in the powder after preliminary granulation, and dry-mixed 30 minutes of ball milling；
e）Toughening modifying：Toughener is added in the powder after step d processing, and dry-mixed 20 minutes of ball milling, it is made after drying
Powder for preparing high tenacity refractory material.
Measure of merit：
The obtained powder for being used to prepare refractory material in above-described embodiment is sintered 8 hours through shaping and at 1400 DEG C and prepared
Refractory material is obtained, and correlated performance test is carried out to obtained refractory material；
Refractoriness test is carried out using the GB/T 7322-2007 methods recorded, and apparent porosity is recorded using GB/T 5071-2013
Method carry out, cold crushing strength is carried out using the GB/T 5072-2008 methods recorded, and refractoriness under load uses GB/T
The method that 5989-2008 is recorded is carried out, and fracture toughness is tested using SENB methods well known in the art.
Test effect：
1. refractoriness >=1860 DEG C, maximum temperature in use >=1800 DEG C；
2. apparent porosity≤6%；
3. cold crushing strength >=115MPa；
4. refractoriness under load >=1820 DEG C；
5. fracture toughness >=1.5MPam1/2。
It should be appreciated that to those skilled in the art, can according to the above description be improved or be become
Change, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (4)
1. a kind of raw powder's production technology for being used to prepare high tenacity refractory material, it is characterised in that comprise the following steps：
a）Get the raw materials ready：Prepare raw material by following parts by weight：120 parts of aluminum oxide, 35~45 parts of magnesia, 2~5 parts of toughener is bonded
1~3 part of agent；
b）Raw material is crushed：Aluminum oxide and magnesia are crushed to 3000~4000 mesh respectively；
c）Preliminary granulation：Aluminum oxide and magnesia are well mixed, then spray into thereto aluminum oxide and magnesia gross weight 2~
5wt% water, continuous vibrating prilling while water spray；
d）Granulate again：Binding agent is added in the powder after preliminary granulation, and dry-mixed 20~30 minutes of ball milling；
e）Toughening modifying：Toughener is added in the powder after step d processing, and dry-mixed 10~20 minutes of ball milling, after drying
The powder for preparing high tenacity refractory material is made.
2. a kind of raw powder's production technology for being used to prepare high tenacity refractory material according to claim 1, its feature exists
In：
Described toughener presses 6 by niobium pentaoxide and tantalum pentoxide：2~3 weight is than composition.
3. a kind of raw powder's production technology for being used to prepare high tenacity refractory material according to claim 1, its feature exists
In：
Described binding agent is 5wt% Kynoar 1-METHYLPYRROLIDONE solution.
4. a kind of raw powder's production technology for being used to prepare high tenacity refractory material according to claim 1, its feature exists
In：
In the step c, the process of water spray is uniform at 10~12 minutes to be completed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110644638A (en) * | 2018-06-27 | 2020-01-03 | 池坤祐 | Fireproof layer body |
| CN112159211A (en) * | 2020-09-30 | 2021-01-01 | 武汉理工大学 | Preparation method of high-density, high-hardness and sub-millimeter-scale alumina ceramic ball |
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| CN104744020A (en) * | 2013-12-30 | 2015-07-01 | 比亚迪股份有限公司 | Ceramic and preparation method thereof and ceramic prepared by preparation method |
| CN106278321A (en) * | 2016-08-21 | 2017-01-04 | 长兴盟友耐火材料有限公司 | A kind of high tenacity refractory material and preparation technology thereof |
| CN106587938A (en) * | 2016-11-14 | 2017-04-26 | 江苏科技大学 | Spinel powder with high temperature conductivity and synthesis method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104744020A (en) * | 2013-12-30 | 2015-07-01 | 比亚迪股份有限公司 | Ceramic and preparation method thereof and ceramic prepared by preparation method |
| CN104150895A (en) * | 2014-08-01 | 2014-11-19 | 中南大学 | Low-temperature preparation method of magnesia-alumina spinel |
| CN106278321A (en) * | 2016-08-21 | 2017-01-04 | 长兴盟友耐火材料有限公司 | A kind of high tenacity refractory material and preparation technology thereof |
| CN106587938A (en) * | 2016-11-14 | 2017-04-26 | 江苏科技大学 | Spinel powder with high temperature conductivity and synthesis method and application thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644638A (en) * | 2018-06-27 | 2020-01-03 | 池坤祐 | Fireproof layer body |
| CN112159211A (en) * | 2020-09-30 | 2021-01-01 | 武汉理工大学 | Preparation method of high-density, high-hardness and sub-millimeter-scale alumina ceramic ball |
| CN112159211B (en) * | 2020-09-30 | 2024-02-06 | 武汉理工大学 | Preparation method of high-density high-hardness submillimeter-grade alumina ceramic balls |
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